.flyover .mask {
    top: 0;
    left: 0;
    position: fixed;
    width: 100%;
    height: 100%;
    opacity: 0.5;
    background: black;
    z-index: 1049;
}

.flyover .alert{
    left: 50%;
    top: 50%;
    width: 150px;
    height: 80px;
    margin-left: -75px;
    background-color: gainsboro;
    position: fixed;
    z-index: 1050;
    text-align: center;
    line-height: 40px;
}

.alert img{
    width: 30px;
    height: 30px;
    vertical-align: middle;
}